Nonstop flight route between Tonopah, Nevada, United States and Sofia, Bulgaria:

About this route:

A direct, nonstop flight between Tonopah Test Range Airport (XSD), Tonopah, Nevada, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 6,339 miles (or 10,202 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Tonopah Test Range Airport and Sofia Airport Vrazhdebna, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Tonopah Test Range Airport and Sofia Airport Vrazhdebna. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Tonopah Test Range Airport (XSD):

• In 1997, the United States purchased 21 Moldovan aircraft for evaluation and analysis, under the Cooperative Threat Reduction accord.
• The earliest known depiction of the airfield was on the July 1970 Air Force Tactical Pilotage Chart.
• Near the end of the Cold War the program was abandoned and the squadron was disbanded.
• In 2006, the Constant Peg program was declassified and the USAF held a series of press conferences about the former top secret US MiGs.
• The assets of the squadron could not go to the boneyard at Davis-Monthan AFB, and the fate of them remains in some cases, still classified.
• The closest airport to Tonopah Test Range Airport (XSD) is Tonopah Airport (TPH), which is located 25 miles (40 kilometers) NW of XSD.
• In 1980 the 4477th TEF was re-designated as the 4477th Test and Evaluation Squadron and the operation was renamed again to Constant Peg.
• The furthest airport from Tonopah Test Range Airport (XSD) is Pierrefonds Airport (ZSE), which is located 11,207 miles (18,036 kilometers) away in Saint-Pierre, Réunion.
• What was learned during these projects prompted the US Navy to commence Top Gun exercises first at NAS Miramar, California and then NAS Fallon, Nevada.

Facts about Sofia Airport Vrazhdebna (SOF):

• Terminal 2 was officially opened on 27 December 2006 with the symbolic arrival of Bulgaria Air flight FB 408 from Brussels.
• In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
• The new Sofia tower will be situated to the west of Terminal 2 and will be complementing the terminal building in architectural terms.
• Sofia Airport Vrazhdebna handled 350,432 passengers last year.
• The furthest airport from Sofia Airport Vrazhdebna (SOF) is Chatham Islands (CHT), which is located 11,437 miles (18,405 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• A significant and recurring operational criticism of Sofia Airport has concerned its historical lack of all-weather operations capability.
• According to the plan a new Sofia airport terminal was built to the east of the old terminal and a second runway was constructed alongside the existing one.
• Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.
• The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.